ModsJava
Monsters in the Closet
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

NOW ALSO ON NEOFORGE

This is a pretty simple Fabric and NeoForge mod that highlights the mobs that prevent you from sleeping. To avoid it being exploitative, it'll only highlight the mobs if the message you get would be "Can't sleep now; monsters near by", and it only highlights for 3 seconds.
If installed on the client, it'll work in singleplayer and any server. If it's installed on the server, than everyone can see the highlights, even those without the mod.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.9, 1.21.10
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as monsters-in-the-closet-1.0.3+1.21.9.jar — drop this file into the mods folder
- Download size: 12 KB
- Download link checked 27 Aug 2026 — working
These come from our own check of the pack file, not from the source page.